Travel experts say that this month they’re seeing some of the lowest fares they’ve seen in years. Airline research firm Hopper, which analyzes billions of airfare price searches every day, says that airfares booked in January will average about $210 per domestic round-trip, more than 14% below the same month last year. “That’s the lowest we’ve seen in the last three years,” explains Patrick Surry, the chief data scientist at Hopper.

Some of the fares are cheaper than a night in a hotel. Frontier is offering one-way tickets to places like Denver, Pittsburgh and Miami from a number of cities starting at $19. Spirit has a number of one-way deals to cities around the nation for $23, and Allegiant for just $37. (Of course, these fares don’t include fees, but as George Hobica, the founder of Airfarewatchdog.com points out: even with the fees, the all-in cost is still very low.)

It isn’t just the discount airlines that are offering bargains: American Airlines
AAL, +2.05%
is offering a deal for a little over $100 round-trip from Dallas to Miami; Southwest
LUV, +0.52%
recently had a round-trip deal from Atlanta to Philadelphia for $82. “Fares are crazy low,” says Hobica. “Even the full frills fares are low.”

Experts say these super-low fares are thanks to a plethora of converging factors, including seasonality (January is usually a good month to find airfare deals), low fuel prices (in December, for example, jet fuel was priced about $1 a gallon, the lowest since 2004, Surrey explains), increased competition and the changing nature of ticket prices (airlines are increasingly offering super-low base fares and then making up for that with fees).

Deals on some routes are better than others: In general, deals to and from airports where multiple carriers operate will offer the deepest discount this month, says Surrey. For those searching for warmer weather, deep discounts of 15% or more can be found to and from Honolulu, Miami, New Orleans and Las Vegas, he adds.

That said, travelers on some routes (in particular on routes where there isn’t a lot of competition) may not notice much of a savings. And typically the lowest prices are for travel on a Tuesday or Wednesday, Hobica says — not exactly convenient for us 9-to-5ers.

Plus, these low fares likely won’t last. In general, airfares are higher in spring and summer months — Hopper predicts that average round-trip domestic fares will hit $227 in March (a nearly 6% jump from February) and $247 in June (a more than 6% jump from spring fares).

Still, this entire year will likely be a good one — at least in terms of deals — for flyers. Ticket prices for the U.S. are expected to rise just 0.5% this year, according to the 2016 Global Business Travel Outlook report, thanks, in part to low oil prices. And thanks to the fact that flights are a big factor in vacation package pricing, consumers may find that these bundled opportunities are deeply discounted as well, says Gabe Saglie, the senior editor at Travelzoo.

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